千年木垂葉怎麼回事？麒麟黃葉怎麼回事？/What's with the thousand-year-old tree leaves?

今日提問：千年木、蝴蝶蘭、文殊蘭、麒麟、琴葉榕/Today's question: Millennium Wood, Phalaenopsis, Manchuria, Kirin, Banyan